The book provides a comprehensive guide to understanding OCD, from the basics to the latest treatment options and therapeutic approaches. It provides readers with an overview of the relevance and challenges of dealing with OCD. The first chapter looks at the basics of OCD and lays the foundation for an in-depth understanding of this complex mental illness. In the second chapter, the various symptoms and types of OCD are described in detail, giving sufferers and relatives a clear picture of the many different manifestations of the disorder. The third chapter is dedicated to the causes and risk factors that can contribute to the development of obsessive-compulsive disorder and offers insights into the latest research findings. The diagnosis and differential diagnosis of obsessive-compulsive disorder, explained in detail in the fourth chapter, are crucial for the initiation of appropriate treatment. This chapter emphasises the importance of a precise differentiation from other mental disorders. The fifth chapter presents the various treatment methods, from psychotherapy to medication, and discusses their effectiveness and areas of application. Chapters six and seven focus on coping strategies, daily life management, long-term perspectives and rehabilitation. These sections are particularly valuable for sufferers and their relatives, as they offer practical tips and support for dealing with the disorder in everyday life, as well as showing ways in which a fulfilling life is possible despite the challenges. Finally, the eighth chapter looks to the future of OCD treatment and presents innovative therapeutic approaches and the most promising new treatment methods. The book closes with a conclusion that summarises the most important findings and encourages readers to face the challenges and actively seek solutions. With its detailed yet accessible presentation, this work is an indispensable resource for sufferers, relatives, therapists and anyone interested in the topic of OCD.